442223023 has 16 divisors (see below), whose sum is σ = 513491616. Its totient is φ = 376381440.

The previous prime is 442223011. The next prime is 442223063. The reversal of 442223023 is 320322244.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442223023 is a prime.

It is a super-2 number, since 2×442223023² = 391122404142517058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442222985 and 442223003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442223063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29965 + ... + 42217.

It is an arithmetic number, because the mean of its divisors is an integer number (32093226).

Almost surely, 2^442223023 is an apocalyptic number.

442223023 is a deficient number, since it is larger than the sum of its proper divisors (71268593).

442223023 is a wasteful number, since it uses less digits than its factorization.

442223023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12474.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 442223023 is about 21029.0994338797. The cubic root of 442223023 is about 761.8692577704.

Adding to 442223023 its reverse (320322244), we get a palindrome (762545267).

The spelling of 442223023 in words is "four hundred forty-two million, two hundred twenty-three thousand, twenty-three".